/Engine/Source/Runtime/Core/Public/Internationalization/StringTableCore.h
If the string table is already loaded, or loading is perform synchronously, then the callback will be called before this function returns.
The async loading ID of the asset, or INDEX_NONE if no async loading was performed.
static int32 LoadStringTableAsset ( const [FName](API\Runtime\Core\UObject\FName) InTableId, [FLoadStringTableAssetCallback](API\Runtime\Core\Internationalization\IStringTableEngineBridge\FLoadStringTable-) InLoadedCallback )